如果有帮助，请参阅此链接...
PayPal沙箱

阅读以下内容:
文档
贝宝开发网络
客户支持

请投票表决是否有帮助，以便其他人可以考虑作为答案.

问候

Hi,

See this link if could help...
PayPal Sandbox

Read the following:
Documentation
PayPal Development Network
Customer Support

Please vote if could help so that others may consider as an answer..

Regards

代码项目文章将为您提供帮助

Hi,

code project article will help you

您好，
我通过asp.net完成了PayPal帐户交易
请下载代码.
存在3种形式相同的现有应用程序，并更改了webconfig.

下载代码:
http://www.codeproject.com/KB/aspnet/UsePayPalPaymentInASPNET.aspx

Hello,
I have Done PayPal account transaction with asp.net
Plz download code.
there is 3 form same existing your application and change webconfig.

Download Code:
http://www.codeproject.com/KB/aspnet/UsePayPalPaymentInASPNET.aspx